**S. V. Kryuchkov and A. I. Shapovalov
**

*Pedagogical University, Volgograd, 400013 Russia
*

Received December 16, 1996

**Abstract**—The effect of a high-frequency uniform electric field on the shape of a solitary electromagnetic wave

propagating in a quantum superlattice (SL) is studied. The electronic energy spectrum of the SL is chosen in

the strong coupling approximation with the second harmonic taken into account, which is beyond the scope of

consideration of “nearest neighbors.” Electromagnetic waves are shown to be described by the double sine-Gor-

don (2SG) equation in this situation. It is noted that solution of the 2SG equation corresponding to pulse ampli-

fication is possible. It is also shown that the inclusion of the noncosine form of the energy spectrum results in

a decrease in the velocity and the spatial dimensions of a solitary wave stabilized by the high-frequency field.

The temperature dependence of the velocity of a dissipative soliton is revealed.

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